Installed HA on a Pi4 routerboard a while back. It only has the Pi4 Compute Module and 2 NICs (no USB, HDMI, etc). Access is only possible via network, or the filesystem can be accessed if the the microSD card is removed and read on another system.
It was running fine, but after attempting upgrade it went offline and will not respond to http/https anymore. I can see it is requesting a DHCP address from the router and it will respond to pings. I tried to SSH into it but also failed (I think I have to enable this from the web interface first).
Can anyone recommend any tricks to gain access to it? Otherwise if I remove the SD card is it possible to backup the config from this to restore to another HA once I rebuild it? Are there any suggested things to check on the filesystem of the SD card that might help to get the existing HA accessible again?
Any recommendations are appreciated.
I have noticed that tailscale is still running and active on it, though I can’t access via the web interface on this either. While this doesn’t help me access, it does prove that the underlying system is still running, it’s just the web interface that is broken.
Hoping for any tips from the community.